Okay, what is the difference between a hidden rare and a rare card? And, why is it called a hidden rare?

Hidden rares are just a lot harder to get - kind of like a "secret rare" in Yugioh, where you are not very likely to ever really get one unless you open a billion packs...^^ lol. Normal rares you pretty much at least have a 1/24 chance to get XD

To be slightly more specific the odds of pulling a hidden rare are approximatly 1 per case. (24 boxes) while there is a rare in every pack. The first set had one while the other 9 haad 2. In the first 4 sets the names were in Kanji (Japanese) while after that they were in English. The final set they are part of the normal numbering while in the first 9 the were either numbered 0 or H1, H2.